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H igher‐level systematics of A canthaceae determined by chloroplast DNA sequences
Author(s) -
Scotland Robert W.,
Sweere Jennifer A.,
Reeves Patrick A.,
Olmstead Richard G.
Publication year - 1995
Publication title -
american journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.218
H-Index - 151
eISSN - 1537-2197
pISSN - 0002-9122
DOI - 10.1002/j.1537-2197.1995.tb11494.x
Subject(s) - ndhf , biology , acanthaceae , monophyly , taxon , sister group , botany , systematics , evolutionary biology , chloroplast dna , phylogenetics , taxonomy (biology) , clade , genetics , gene
Parsimony analyses of ndhF chloroplast gene sequences were undertaken for 15 species of Acanthaceae and nine representative outgroup species. In addition, parsimony analyses of rbc L sequences were undertaken for 12 species of Acanthaceae and the same nine outgroup species as for ndh F. The results indicate that ndh F provides more informative characters and greater systematic resolution at this hierarchical level than rbc L. The ndhF analyses demonstrate that Elytraria and Thunbergia are successive sister taxa to all Acanthaceae taxa that have retinacula and explosive fruits. These data also demonstrate that taxa with both retinacula and explosive fruits can be subdivided further into two monophyletic groups that correspond to taxa with and without cystoliths. Within the group with cystoliths three putatively monophyletic groups correspond to taxa possessing quincuncial, left contort, and ascending‐cochlear corolla aestivation patterns. The results of the rbc L analysis provide less systematic resolution than ndh F but do contain several congruent arrangements of taxa within Acanthaceae.